Method, storage medium and equipment for suppressing surge noise of seismic data

Abstract

The invention discloses a method for suppressing surge noise of seismic data, a storage medium and equipment, and the method comprises the steps: reading original seismic data, and carrying out the high-pass filtering of the original seismic data; filtering part of low-frequency surge noise under the condition that effective signals of seismic data are not lost; selecting a fixed sparse transformation base according to the characteristics of effective signals in the original seismic data; for high-frequency components obtained through filtering, constructing an alternate iterative optimizationmethod based on a semi-quadratic optimization technology and a linearized Bregman method, and obtaining sparse representation of seismic data effective signals under a sparse transformation basis while surge noise is suppressed; and finishing suppressing the surge noise in the original seismic data. According to the correlation entropy induction measurement robust sparse representation method forsuppressing the surge noise of the seismic data, the high-amplitude surge noise can be effectively suppressed, and the signal-to-noise ratio of the seismic data is improved.

Description

technical field [0001] The invention belongs to the technical field of seismic exploration data processing, and in particular relates to a robust sparse representation method, storage medium and equipment for correlative entropy induced metric for suppressing surge noise of seismic data. Background technique [0002] According to the characteristics of noise appearing on the seismic section, it can be divided into random noise and correlated noise. During the imaging process of seismic data, the reflected signal received by the geophone contains a large amount of random noise. The existence of random noise directly affects the continuity of the event of the time section of seismic data, which greatly increases the difficulty of seismic data interpretation. In order to meet the current requirements of seismic resource exploration, the primary task of seismic data processing is to suppress random noise and improve the signal-to-noise ratio of seismic data. [0003] Surge noi...

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Problems solved by technology

[0007] 1. The selection of the filter window of the median filtering method cannot change with the noise, and the effective signal will be lost or the noise cannot be suppressed.

[0008] 2. It is difficult to select the initial value of the iteration, and the selection of different initial values ​​will greatly affect the suppression effect of surge noise

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